Solve 47 = 3*r - 5*j + 7, -3*j = r + 10 for r.
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What is the r'th term of -77, -70, -65, -62, -61, -62?
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What is the n'th term of 108, 111, 126, 159, 216, 303, 426, 591?
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What is the f'th term of 19, 37, 53, 67, 79, 89, 97?
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What is the o'th term of -142, -562, -1262, -2242, -3502?
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What is the b'th term of 1025, 1042, 1073, 1124, 1201?
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What is the u'th term of 14, 15, 18, 23?
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